it's at least ... 15 years that I'm subscribed to JCE Pro and I'm using it on all of my projects. But I never had such a struggle in order to make iFrames working.
Currently, I'm working on a top actual J 4.3 site, PHP 8.0.18.
- Yes, the admin has no filtering set:
- Yes, iFrames in JCE settings are set to allowed
- Yes, the profile has the feature icon activated
The only way to make iFrames working is setting the standard editor to "none" and then back again to JCE - but not touching this article again.